Twin-turbine helicopters

1975 attack helicopter family by Hughes

attack helicopter family by Mil

family of transport helicopters

series of military utility transport helicopters

1982 attack helicopter family by Mil

military transport helicopter family by Boeing Vertol

1977 transport helicopter family by Mil

European four bladed, twin engine, attack helicopter

family of Russian military transport helicopters

attack helicopter series by Kamov

anti-submarine helicopter family by the Sikorsky Aircraft Corporation

anti-submarine helicopter family by Kamov

1957 transport helicopter family by Mil

family of military helicopters

1971 utility helicopter family by Agusta

attack helicopter family by Agusta

utility helicopter family by Mil

1965 transport helicopter family by Sud Aviation

series of utility helicopters

utility helicopter by Eurocopter, later Airbus Helicopters

1971 multi-role combat helicopter family by Westland

1968 utility helicopter family by Bell

1998 utility helicopter family by Kamov

1979 utility transport helicopter family by Bell

2003 transport helicopter family by Mil

multi-role helicopter family by Aérospatiale

attack helicopter

attack helicopter prototype by Boeing and Sikorsky

transport helicopter family

transport helicopter family by Aérospatiale

attack helicopter model by Bell

series of military medium-lift helicopters

1960 transport helicopter family by Mil

1964 military helicopter family

anti-submarine helicopter family by Mil

1961 anti-submarine helicopter family by Kamov

1977 transport helicopter family by Sikorsky

utility helicopter family

Attack helicopter by Atlas Aircraft Corporation, later Denel Aviation

Indian combat helicopter

1979 utility helicopter family by MBB and Kawasaki

helicopter by AgustaWestland, later Leonardo

1967 utility helicopter family by Bolkow

1959 helicopter family by Sikorsky

military medium-lift helicopter

series of civil heavy-lift helicopters

military utility helicopter model by Bell

series of twin-engine attack helicopters

series of military utility helicopters

American utility helicopter

1958 military transport helicopter family

kamov helicopter

utility helicopter family by Sikorsky

Russian utility helicopter

utility helicopter

reconnaissance and attack helicopter

military helicopter by AgustaWestland (currently Leonardo)

1976 utility helicopter family by Bell

attack helicopter series of the British Army

search and rescue helicopter series by Aerospatiale, later Eurocopter